Kennametal 1184126 Milling Insert LFEW150304ERLN KC725M

Product Description

The KENNAMETAL 1184126 is a solid carbide milling insert with ISO designation LFEW150304ERLN and manufacturer grade KC725M. It features a PVD-applied TiN/TiCN/TiN multilayer coating designed to extend tool life when cutting steel, stainless steel, and superalloys including titanium. The insert measures 0.6268 inches long, 0.3752 inches wide, and 0.1299 inches thick, with a corner radius of 0.0157 inches (1/64 inch). It mounts via screw-holding method and is oriented for right-hand cutting. The LN chip breaker geometry supports controlled chip evacuation across the targeted workpiece materials. This insert is specified by machinists and CNC operators in production and job-shop milling environments.

This insert is suited for face milling, shoulder milling, and similar indexable milling operations on steel (ISO P), stainless steel (ISO M), and superalloys and titanium (ISO S). It is appropriate for both roughing and finishing passes where a PVD-coated solid carbide insert in the KC725M grade delivers the necessary edge stability. The rectangular LFEW insert style fits toolholders and cutter bodies designed for the LFEW series with a size code of 2521. Typical applications include aerospace, energy, and general metalworking production runs.

Key Features

• Solid carbide substrate with PVD TiN/TiCN/TiN multilayer coating for wear and heat resistance
• KC725M manufacturer grade rated for steel, stainless steel, superalloys, and titanium (ISO P, M, S)
• LN chip breaker geometry for controlled chip formation across workpiece material range
• Right-hand insert orientation with 90-degree included angle and 0-degree rake angle
• Corner radius of 0.0157 inches (0.40 mm) for edge strength in demanding cuts
• Screw-holding mount for positive, repeatable seating in compatible cutter bodies

Compatibility

Designed for use in LFEW-series indexable milling cutter bodies accepting insert size code 2521 with a 0.1732-inch screw hole diameter. Consult your toolholder documentation to confirm seat geometry, screw size, and insert pocket dimensions before installation.

Installation Notes

Installation and indexing of milling inserts should be performed by a qualified machinist or toolroom technician with the spindle fully stopped and machine energy isolated per lockout/tagout procedures. Use the correct Torx or hex key specified by the cutter body manufacturer when seating the clamping screw — do not over-torque. Inspect the insert pocket and seating surface for chips or wear before fitting a new insert. Verify insert orientation and hand designation match the cutter body before engaging the workpiece.